1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.junit.Assert;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class BufferUtilTest
{
@Test
public void testToInt() throws Exception
{
ByteBuffer buf[] =
{
BufferUtil.toBuffer("0"),
BufferUtil.toBuffer(" 42 "),
BufferUtil.toBuffer(" 43abc"),
BufferUtil.toBuffer("-44"),
BufferUtil.toBuffer(" - 45;"),
BufferUtil.toBuffer("-2147483648"),
BufferUtil.toBuffer("2147483647"),
};
int val[] =
{
0,42,43,-44,-45,-2147483648,2147483647
};
for (int i=0;i<buf.length;i++)
assertEquals("t"+i, val[i], BufferUtil.toInt(buf[i]));
}
@Test
public void testPutInt() throws Exception
{
int val[] =
{
0,42,43,-44,-45,Integer.MIN_VALUE,Integer.MAX_VALUE
};
String str[] =
{
"0","42","43","-44","-45",""+Integer.MIN_VALUE,""+Integer.MAX_VALUE
};
ByteBuffer buffer = ByteBuffer.allocate(24);
for (int i=0;i<val.length;i++)
{
BufferUtil.clearToFill(buffer);
BufferUtil.putDecInt(buffer,val[i]);
BufferUtil.flipToFlush(buffer,0);
assertEquals("t"+i,str[i],BufferUtil.toString(buffer));
}
}
@Test
public void testPutLong() throws Exception
{
long val[] =
{
0L,42L,43L,-44L,-45L,Long.MIN_VALUE,Long.MAX_VALUE
};
String str[] =
{
"0","42","43","-44","-45",""+Long.MIN_VALUE,""+Long.MAX_VALUE
};
ByteBuffer buffer = ByteBuffer.allocate(50);
for (int i=0;i<val.length;i++)
{
BufferUtil.clearToFill(buffer);
BufferUtil.putDecLong(buffer,val[i]);
BufferUtil.flipToFlush(buffer,0);
assertEquals("t"+i,str[i],BufferUtil.toString(buffer));
}
}
@Test
public void testPutHexInt() throws Exception
{
int val[] =
{
0,42,43,-44,-45,-2147483648,2147483647
};
String str[] =
{
"0","2A","2B","-2C","-2D","-80000000","7FFFFFFF"
};
ByteBuffer buffer = ByteBuffer.allocate(50);
for (int i=0;i<val.length;i++)
{
BufferUtil.clearToFill(buffer);
BufferUtil.putHexInt(buffer,val[i]);
BufferUtil.flipToFlush(buffer,0);
assertEquals("t"+i,str[i],BufferUtil.toString(buffer));
}
}
@Test
public void testPut() throws Exception
{
ByteBuffer to = BufferUtil.allocate(10);
ByteBuffer from=BufferUtil.toBuffer("12345");
BufferUtil.clear(to);
assertEquals(5,BufferUtil.flipPutFlip(from,to));
assertTrue(BufferUtil.isEmpty(from));
assertEquals("12345",BufferUtil.toString(to));
from=BufferUtil.toBuffer("XX67890ZZ");
from.position(2);
assertEquals(5,BufferUtil.flipPutFlip(from,to));
assertEquals(2,from.remaining());
assertEquals("1234567890",BufferUtil.toString(to));
}
@Test
public void testAppend() throws Exception
{
ByteBuffer to = BufferUtil.allocate(8);
ByteBuffer from=BufferUtil.toBuffer("12345");
BufferUtil.append(to,from.array(),0,3);
assertEquals("123",BufferUtil.toString(to));
BufferUtil.append(to,from.array(),3,2);
assertEquals("12345",BufferUtil.toString(to));
try
{
BufferUtil.append(to,from.array(),0,5);
Assert.fail();
}
catch(BufferOverflowException e)
{}
}
@Test
public void testPutDirect() throws Exception
{
ByteBuffer to = BufferUtil.allocateDirect(10);
ByteBuffer from=BufferUtil.toBuffer("12345");
BufferUtil.clear(to);
assertEquals(5,BufferUtil.flipPutFlip(from,to));
assertTrue(BufferUtil.isEmpty(from));
assertEquals("12345",BufferUtil.toString(to));
from=BufferUtil.toBuffer("XX67890ZZ");
from.position(2);
assertEquals(5,BufferUtil.flipPutFlip(from,to));
assertEquals(2,from.remaining());
assertEquals("1234567890",BufferUtil.toString(to));
}
@Test
public void testToBuffer_Array()
{
byte arr[] = new byte[128];
Arrays.fill(arr,(byte)0x44);
ByteBuffer buf = BufferUtil.toBuffer(arr);
int count = 0;
while (buf.remaining() > 0)
{
byte b = buf.get();
Assert.assertEquals(b,0x44);
count++;
}
Assert.assertEquals("Count of bytes",arr.length,count);
}
@Test
public void testToBuffer_ArrayOffsetLength()
{
byte arr[] = new byte[128];
Arrays.fill(arr,(byte)0xFF); // fill whole thing with FF
int offset = 10;
int length = 100;
Arrays.fill(arr,offset,offset + length,(byte)0x77); // fill partial with 0x77
ByteBuffer buf = BufferUtil.toBuffer(arr,offset,length);
int count = 0;
while (buf.remaining() > 0)
{
byte b = buf.get();
Assert.assertEquals(b,0x77);
count++;
}
Assert.assertEquals("Count of bytes",length,count);
}
private static final Logger LOG = Log.getLogger(BufferUtilTest.class);
@Test
public void testWriteTo() throws IOException
{
ByteArrayOutputStream out = new ByteArrayOutputStream();
int capacity = 1024 * 1024;
byte[] bytes = new byte[capacity];
Arrays.fill(bytes, (byte)'x');
ByteBuffer buffer = BufferUtil.allocate(1024);
BufferUtil.append(buffer, bytes, 0, capacity);
long start = System.nanoTime();
for (int i = 0; i < 30; i++)
{
long startRun = System.nanoTime();
BufferUtil.writeTo(buffer, out);
long elapsedRun = System.nanoTime() - startRun;
LOG.warn("run elapsed={}ms", elapsedRun / 1000);
}
long elapsed = System.nanoTime() - start;
LOG.warn("elapsed={}ms", elapsed / 1000);
}
}
|
